Well, there's the pre-cursor character Doc Savage, The Man of Bronze...
While it doesn't have the same feel, there are many brilliant characters in Herbert's Dune novels (only read the first 1, 3 or 6 which Frank Herbert himself wrote, depending on your tolerance and enjoyment)
Lex Luthor in Elliot S. Maggins' _Superman: The Last Son of Krypton_ is of course brilliant, as is the novel.
Isaac Asimov's Dr. Susan Calvin of his robot stories
E. E. Doc Smith's Richard Seaton
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